TV THIS WEEK: Touch ends, a Once Upon a Time finale, and more!

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May 6, 2013, 9:22 AM EDT

While the low-rated Touch comes to its likely end and Once Upon a Time concludes its second season, it's a busy week as the shows that began last fall race toward their finales over the next couple of weeks.

Also this week, Rafe delves deeper into his son's death on Defiance, Miles and Neville partner up on Revolution, Norman has trouble at school on Bates Motel, Artie faces obstacles after setting loose a pandemic on Warehouse 13, Nick falls under the spell of an influential Wesen on Grimm, the Dark Archer prepares for the Undertaking on Arrow, Crowley plots to take out everyone Sam and Dean have ever rescued over the years on Supernatural, the ladies are invited to play Dungeons & Dragons on The Big Bang Theory, Graduation Day approaches on The Vampire Diaries, Cat and Vincent go on a date on Beauty & The Beast, Root goes after the Machine on Person of Interest, we'll find out more about the woman who Sherlock loved on Elementary, Gillian Anderson guest-stars on Hannibal, Morgana hunts Emrys on Merlin, the Cybermen are back on Doctor Who, Helena returns from the almost-dead on Orphan Black, dinos try to eat Treat Williams on Syfy's movie Rise of the Dinosaurs, and Dany exchanges gifts with a slave lord on Game of Thrones.

Here's what we have to look forward to this week on sci-fi, fantasy and paranormal TV.

Monday, May 6

Defiance (Syfy) 9 p.m. - “A Well Respected Man”

Rafe gets closer to learning the truth behind his son's death. Meanwhile, Kenya is abducted.

Here's a promo:

Revolution (NBC) 10 p.m. - “The Love Boat”

Miles and Neville join forces for a cause, and Charlie, Jason and Nora take on a dangerous mission to stop Monroe from getting his hands on anthrax. Meanwhile, Rachel and Aaron find themselves in a difficult situation.

Here's a look:

Bates Motel (A&E) 10 p.m. - “A Boy and His Dog”

Norma must deal with a mysterious stranger, and Norman has troubles at school. Meanwhile, Dylan hits the road.

Here's a promo:

Warehouse 13 (Syfy) 10 p.m. - “Parks and Rehabilitation”

Artie goes on trial for his actions. Meanwhile, Pete and Claudia try to track down a murderer involved with eco-terrorists.

Here's a look:

Tuesday, May 7

Grimm (NBC) 10 p.m. - “Kiss of the Muse”

Nick falls under the spell of a muse-like Wesen. Meanwhile, Rosalee gets her first glimpse of Nick's trailer.

Here's a preview:

Weird or What? (Syfy) 8 & 9 p.m. - “Monsters” and “Parallel Worlds”

William Shatner hosts this two-episode look at “Monsters” and “Parallel Worlds.” First up, the “Monsters” episode investigates the Mothman in West Virginia and the Monkey Man in New Delhi. Then it's a look at “Parallel Worlds,”with a story where a boy is transported by a strange machine.

Here's a promo:

Wednesday, May 8

Arrow (The CW) 8 p.m. - “Darkness on the Edge of Town”

As the Undertaking approaches, the Dark Archer does business with seismologist Dr. Brion Markov and his team. Meanwhile, secrets involving the Meryln Global Group expose dark secrets, and Laurel comes to a decision involving Tommy.

Here's a preview:

Supernatural (The CW) 9 p.m. - “Clip Show”

Crowley decides to kill everyone Sam and Dean ever saved. Meanwhile, Castiel and the brothers discover a film in the files of the Men of Letters that may be the key to the third trial.

Here's a look:

Haunted Collector (Syfy) 9 p.m. - “Hollywood Haunting; Gold Rush Ghost”

John and his team head to Hollywood to investigate a home that actor/director Orson Welles once owned. Then they're off to a Gold Rush town to hunt for spirits.

Here's a promo:

Deep South Paranormal (Syfy) 10 p.m. - “The Good, the Bad and the Ghostly”

A member of the team decides that sealing himself in a coffin is a good idea, and it has something to do with driving away the ghosts of three brothers.

Here's a preview:

Thursday, May 9

The Big Bang Theory (CBS) 8 p.m. - “The Love Spell Potential

When the women's trip to Vegas is canceled, the men invite them to play Dungeons & Dragons. Elsewhere, Raj and Lucy's date does not go well.

The Vampire Diaries (The CW) 8 p.m. - “The Walking Dead

In the penultimate episode before the season finale, as Graduation Day approaches, Caroline goes on a mission to distract Elena. Meanwhile, patients are being drained of blood in the hospital, and ghosts appear in the town. Note to the townfolk of Mystic Falls: Stay indoors. Stay away from Graduation Day. Be afraid. Be very afraid.

Here's a preview:

Beauty & the Beast (The CW) 9 p.m. - “Date Night

Cat and Vincent decide to go on a date in public. Meanwhile, Gabe becomes a beast.

Here's a promo:

Person of Interest (CBS) 9 p.m. - “God Mode

Season-two finale! Finch and Reese must make an unexpected alliance to save the Machine and the world from Root (Amy Acker) and the Decima organization.

Here's a preview:

Elementary (CBS) 10 p.m. - “Risk Management

Moriarty, or at least a man who claims to be Moriarty, gives Sherlock a case, and the detective's former love, Irene Adler, appears. Meanwhile, Gregson tries to convince Joan to give up detective work.

Here's a look:

Hannibal (NBC) 10 p.m. - “Sorbet

Gillian Anderson alert! Jack believes the Chesapeake Ripper has returned and is killing again. Meanwhile, Will suffers through nightmares, and Hannibal juggles his seduction of Alana with visiting his own therapist (The X-Files' Gillian Anderson).

Here's a look:

Friday, May 10

Touch (Fox) 9 p.m. - “Leviathan”

Season-two finale! Events come to a head in this season, and likely series, finale, as Aster Corps nears the completion of the number sequence. Meanwhile, Martin and Trevor interrogate Tanner (guest star D.B. Sweeney) with hopes he can save Jake and Amelia before Astor Corps changes the global economy forever.

Here's a promo:

Merlin (Syfy) 10 p.m. - “The Kindness of Strangers”

Morgana goes after Emrys, leaving Merlin in great peril. Meanwhile, the Great Dragon returns for what could be his final meeting with Merlin.

Here's a sneak peek:

Da Vinci's Demons (Starz) 10 p.m. - “The Tower”

Lorenzo demands that Piero da Vinci defend his estranged son, Leonardo, in court.

Here's a preview:

Other Friday shows of interest:

On the Travel Channel's The Dead Files (10 p.m.), Steve and Amy investigate a property that was once a slave plantation.

Saturday, May 11

Doctor Who (BBC America) 8 p.m. - “Nightmare in Silver”

Cybermen alert! The Doctor and Clara travel to Hedgewick's World, a dilapidated theme park where they find those pesky Cybermen causing trouble.

Here's a look:

Orphan Black (BBC America) 9 p.m. - “Parts Developed in an Unusual Manner”

Sarah's on her own, Helena's back from the almost-dead, and Cosima's making moves on Delphine.

Here's a preview:

Rise of the Dinosaurs (Syfy) 9 p.m.

Treat Williams stars as a former firefighter who has to rescue his teen daughter when a biotech firm creates a bunch of living, breathing and hungry dinosaurs, which escape their museum exhibit in Los Angeles. Originally called Age of Dinosaurs.

Here's a promo:

Sunday, May 12

Once Upon a Time (ABC) 8 p.m. - “And Straight on 'Til Morning”

Season-two finale! Magic has a price, and it looks like the people of Storybrooke might just be paying up as season two comes to a close.

Here's a preview:

Game of Thrones (HBO) 9 p.m. - “The Bear and the Maiden Fair”

Dany exchanges gifts with a slave lord outside of Yunkai, Sansa worries about her future, and Tywin offers counsel to the king.

Here's a look:

What are you going to watch?